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  2. Intrinsic and extrinsic properties - Wikipedia

    en.wikipedia.org/wiki/Intrinsic_and_extrinsic...

    An extrinsic property is not essential or inherent to the subject that is being characterized. For example, mass is an intrinsic property of any physical object , whereas weight is an extrinsic property that depends on the strength of the gravitational field in which the object is placed.

  3. Cellular noise - Wikipedia

    en.wikipedia.org/wiki/Cellular_noise

    Note that extrinsic noise can affect levels and types of intrinsic noise: [19] for example, extrinsic differences in the mitochondrial content of cells lead, through differences in ATP levels, to some cells transcribing faster than others, affecting the rates of gene expression and the magnitude of intrinsic noise across the population. [17]

  4. Tenase - Wikipedia

    en.wikipedia.org/wiki/Tenase

    Extrinsic tenase complex is made up of tissue factor, factor VII, and Ca 2+ as an activating ion. Intrinsic tenase complex contains the active factor IX (IXa), its cofactor factor VIII (VIIIa), the substrate (factor X), and they are activated by negatively charged surfaces (such as glass, active platelet membrane, sometimes cell membrane of ...

  5. Homeostasis - Wikipedia

    en.wikipedia.org/wiki/Homeostasis

    In biology, homeostasis (British also homoeostasis; / h ɒ m i oʊ ˈ s t eɪ s ɪ s,-m i ə-/ hoh-mee-oh-STAY-sis) is the state of steady internal physical and chemical conditions maintained by living systems. [1]

  6. Intrinsics - Wikipedia

    en.wikipedia.org/wiki/Intrinsics

    Intrinsics or intrinsic may refer to: Intrinsic and extrinsic properties, in science and engineering; Intrinsic motivation in psychology; Intrinsic muscle, in anatomy; Intrinsic function, a function in a programming language that is dealt with specially by a compiler; X Toolkit Intrinsics, a library; Intrinsic factor (biology)

  7. Fluorescence in the life sciences - Wikipedia

    en.wikipedia.org/wiki/Fluorescence_in_the_life...

    A simplified Jablonski diagram illustrating the change of energy levels.. The principle behind fluorescence is that the fluorescent moiety contains electrons which can absorb a photon and briefly enter an excited state before either dispersing the energy non-radiatively or emitting it as a photon, but with a lower energy, i.e., at a longer wavelength (wavelength and energy are inversely ...

  8. Apoptosome - Wikipedia

    en.wikipedia.org/wiki/Apoptosome

    In December of the same year, a further article was released in The Journal of Biological Chemistry stating that Apaf-1 is the regulator of apoptosis, through activation of procaspase-9. [6] The criteria for an apoptosome were laid out in 1999. Firstly, it must be a large complex (greater than 1.3 million daltons).

  9. Apoptosis - Wikipedia

    en.wikipedia.org/wiki/Apoptosis

    The intrinsic pathway is activated by intracellular signals generated when cells are stressed and depends on the release of proteins from the intermembrane space of mitochondria. [20] The extrinsic pathway is activated by extracellular ligands binding to cell-surface death receptors, which leads to the formation of the death-inducing signaling ...